videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including SSB64: Super Smash Bros with in-game commentary #8, SSB64: Super Smash Bros with in-game commentary #3, SSB64: Super Smash Bros with in-game commentary #1